Heating boiler



Nov. 28, 1933.

E. A. HooPER 1,937,117

HEATING BOILER Filed April l5 1952 3 Sheets-Sheet l BY W Nov. 28, 1933. E, ,HOOPER 1,937,117

HEATING BOILER Filed April l5, 1932 3 Sheets-Sheet 2 I I I I I I I 1 I I I I I 1 I I l I I I l I I l I I Elmer/593k oper BY 12m )ZbW-Mm A TTORNE Y NOV. 28, E, A, HOOPER l 1,937,117

"www

I IL.

l l l l I will'l 9 h i g MWI l'i' ff-f'g iw :i 3? W1 @D i W i a' U W j@ l W e 1 l 4.'. #G l U Il r j am? im. m1 I ix-"1- iii O B IN VEN TOR.

SB E/merfoape BY MM MM A TTORNE Y Patented Nov. 28, 1.933

Aeucafionnprii 15; V1932511. swarm-.commit 1 scla'i'ms. (ci. "12211365" provements in oilburning heaters or boilers; and

refers'y especially to:4 that class -of heater` adapted to -bei made from-sheet'metal;4 that is welded;

5 stayed and bolted togetherto formthe 'requ'ired combustion chambers; and-'relatively' llong heat i passages in; addition toV thewater co'mpartn'lentsvx y 'linee-4 of-:Fig: 1;-an`d- 1 or jackets; steam-dome, etc;

'Iheobject-of the 4inventionis todesign a dura#V ble-sheet metal type ofoii-bummgrumaceadapta ed for-ste'amg-'hotwater` ior vapor heating and wherein the combustion andheat passagesex'tend fromv front tol'aa'ckin a way to cause 'the-heatfto- 4tra-verser'the length of'- the boiler fo'urtirnes"atM least; 'betterto" extract the heat from the; hot" gaseous productsV 'of combustion; the aresult lof `1 which Lmeans vless loss Avof ifuel-and waste; of heatl i Y The -furnace'is ladapted'ftojuse differentjrnakes of oilburners; which is positioned in the lower end* door ofthe furnace to direct thefla'me and heat;l

intothemaincombustion chamber. fThelfur'nace in this 1type ofheater; comprising" whatv is icomsuch tubes aref off short -lifel asthypull loose' and are diicult to repair.Av f

through the length'of `thel furnace,^immediately' above` the 'mainlcombustionl chamber that-^servesf--A asa largev flue andvwater container through which-f K seats-the rear end-of thefuinace anCPM a steam'- the`-heat and-water circulate v This invention further includes removable clol'V sure plates whereby the cylindrical water :jacket 40 maybelenclosed 4within the' furnace after ybeing f postioned therein. l

fromthe spirit; or sacrificing anyeof the' advantages of th'einventiol; v

Similarcharacters-of reference denote Y likeor? 22, is lined on -1 all; four side's up to fthe :under` edge corresponding parts'f `Athroughout. the several figures of the accompanying 'drawingsfformng-l the'fparts'oflfwhich are welded, stayed 'andbolted. 'Y Y l t Y bottomplatev24eare'secured inispacec relatione120;`

Y ofi fthe boiler;

Fig' 3 "shows a -central vertical longitudinal@ 65". Fig; 4v vshows a detail sectional view -thxi'iug'lrthe-l front closurevpla'te and connectedparts; taken? on 1g Figi- 5 shows `a front Viet/*ponia -red'ucedV scale,"- illustrating a modifiedl formfof my-inv'entioiiyin"dri 70; i cluding two cylindricalfwater i-j ackets: instead? of oneasinthe'otlrerviews. Y i v` The-furnacaiiscoinpactly lconstrl'lcte.- 'and isa especially:"adapte'dforeconomic?burningofI hilf` v as* f or instance Vfor residential installations; and? #755 i is of a size and proportion which ilends: itselftolconvenient handlingr The mains body-ofthe'lfuiviil tion-chamber that 'Inaybe lined--With`1feg brick andupon-v whichi the boilerA-proper is vniun'ted.'Q30.i: The cylindrical water-jack'et--hereinbeforere 5` ferredvfto comprises-4a {separable-unit? formedof v aninnere-and outer-cylindricalesheetiinetallwallgl producing r an la'nnular-`r waterj acketfthatiextends if with suitable inletand voutlet-heat= passagesso that thegsaine willY circulate'thr'ougllthe" 'cylinden culation offwaterv-through: the' -Ifurnaceis assured.r

Referring in detaili -tof the characters ofrefei" ence-@markedlipenfllthldrawings; `10 represent 'T the front end of the furnace having thereina dome lformdffon E'the'toizrjf betterito? fadapt theJ furnace for steam or vapor heating.v When used for-'steama safetyvalve 15`would-be emp1oyedas 100. shown infFig'. :2.2. Inf this vie'wfrajsl wel'l as n Fgl, is alsoshown nipples l't-llforfthe 'attach-1 ment-fof l:service feed".pipesganotcshownp and? an l opening 17v for the return water. 18 representslf arr:outlet-,sleeve vforwth'e f connectioniofia :'smo'ke v105 pipe of-suitablev proportion;` not sh'ownsey' The ffouterffside platesr 19-1-19'5 as -wellfjasV the ber may'feach 'be foinedf'inpartiof a single thick-'511:

ness offsheet metaljthatj'forins the fouteraplate of 110- n the lboileru and against the vin nere'sicle 'of'v which suitable refbrickr21 are" 'positioned-iso' thatf-.thef,: the `Ilower part i of the" maine combustion chamber ory leg; `portions sof. the :main Water compartment 115 The" outerl plate 19 -Loftheiboileriz heretofore referredvto"extendsfp car'idL overf tot!" form fthe".I sides'l'landlitopand together` witl'ifja.J somewhat'asimilarlyformedi'innerfplate 23 anda thereto by welding and rivets 25, to forman outer water compartment.

The end plates `.2O- form theouter shell of the ends'of the boiler and together with inner 5 plates 2.7, which are secured in spaced relation to the outer plate, form end Water pockets 2 8 that open into the compartment 26 forming a single outer water container. It will thus be ob-f' served that the outer or main section of the 10 boiler is hollow vwith double walls throughout, the

interior space therebetween constituting the main water-container portion or pocketof the boiler.

1 In practice this may be covered,-as iscuston'iary,V

withany suitable asbestos or other form o f-insu- 15. lating material, now shown. A cylindrical' opening 29 is formed in both the frontV and rear ends of Vtheboilerand is provided with gaskets'and closure plates 30-30 that are removably secured thereto by screw bolts 31. These openings 29 Q serve to permit of the insertion and removal of the cyIindriCalwater jacket 32 which is supported in the openings 29 of the ends of the boiler and thus forms a central relatively large longitudinally disposed flue 33 throughwhich lthe v 25d-products of combustion flow. t

Four baffle plates 34-34 and 35- 35 are secured.

to the inner plate 23 of the outer Lwater jacket, Vthe two. lower plates 3e! being disposed horizon- Y tally and extending from one end of the furnaceY to the other, in close proximity to the outer wall :3 6 ofthe cylindrical water jacket 32, separating the combustion chamber 22 from the two upper chambersy 37-37 and into which the products of combustion enter through thebeforementioned Y lfi represents the steam don'iewhichl is built on the cylindrical top .portion of the boiler and communicates with the water chamber 26through 5,openings39 in outer boiler plate 19. A suitable gauge` 40. may be mounted upon this dome and,

lconnected therewithbypipes, as is the water column141', the t'rycocks42 andthe gauge slasfsrli,k e z Y. f

41 indicates the: water column which extends down and is Aconnected with the lower portion of the boiler asat 44, to insure a proper circulation. and registration ofthe Y water withinthejAV boiler.

The. cylindrical Y mentioned is formed of an inner cylindrical plate 45,Y and outer plate 36, and end plates46, there beingv a relatively large central flue'33 thereseearrows b, Fig. 3, in theforward end portion of Vthe cylindrical water jacket and Ypass out through-somewhat similar outlet passages 49 in `the upper portion of the opposite end of the cylindrical waterjacket,y thereby v.causing the combustion productsto pass from onezend of the f cylindrical water jacket .toA the other where they` enter the before mentioned chambers37f37fin mythe two sidesV of the furnace and whereinythe said products-.ofcombustion travel forward along the baffle plates 34 and A'through' the Vopenings 38 whereby they are freeto; enter the forward end ofthe top passage50 formedebetween the 'cylinl den andthe under plate ofthe boiler, where.

water .jacket 32.heretoior e-r y 32 having ues, passages, and circulating pipe contained within a single outer ,waterjacketsand they are free to again travel rearward and'out of vthesmoke outlet 18, Vsee arrow a,.

vThe .annular chamber ofjthe cylindrical .water jacket is connected with the rmain boiler by suitable circulating pipe connections 51A and 52, 'the former being connected between the'lower for-v ward end portion of the cylinder and the front.

of theboiler, whereas the latter is connected withV -therear upper portion of the cylinder and the top portion ofthe bciler, thereby insuring a circ'ulation of Vwater through the cylinder.

From the fregoingQit will be understood that the products lof `the combustion lpass from the .brick lined re chamber 22 through the two inlet passages 48 to the chamber in the cylinder 90 and through 'which they passwandfthen go out through upper outlet passagesflQQin the ,opposite side of the rear end portion of the cylinder when they passinto the rear end ofthe two lo'ngi,l tudinal Y chambers S'lfformed between the baille'f` plates 34 and/35, The products of combustion' thereupon .travelforward in these passages and through the passage 38 at the end of bale plate f 35 where the products Vagain travel back through the single uppermostpassage 50 tothe rear'and 100i out into the stack. This construction causes'V the products ofcombustion totravelthe length 'of thefurnace four to ,five times and at all times between water-filled parts of the boiler vthat serves to thoroughly absorb the heat so that by vi the time the remaining products, the smoke, reach the stackthey arexcooled.` It will alsobe noted that all water containing chambers of the boiler are comparatively. thinA and are exposed to the re Vonone or bothy sides Aso as Vto insure 110.

quick and thorough heating. The size and number ofthe circulating pipes 51 .and -52 may beA increased, or their particular location on the boiler maybe changedif desired, as can alsothe. location of the burnerj15` nozzle herein shown, at what I have described1V asthe Vfront end ofthe furnace, thoughitmay equally aswellbe 'locatedin the oppositeend. f I t will furtherbeseen thatshould itbe neces-v sary to clean out lthe boiler. or .to re pa ir;the cylindricalwater-jacket, it can be readily done by first removing Athe circulating pipesand .then' the screw bolts 3 1 inthe endlplateorplatesm),Y which can be taken'oi in a Wayto :open the ends' of `the,` boiler Yand permit the withdrawal ofthe water jacket., This beingv removed. the V other flues and passages 'of the furnace. maybereadf ily gotten at.

yIn Fig. 5 I- have shown a modification ef my in vention to includ'etwo.,cylindrical wateryjackets 130 connections-like those heretofore described, but

beneath a single dome. In this clonstructionfthe main lcombustion chamberl is) proportionately. widerthan that shown intheother figures and -may be provided with one or more oil,y burners. Inthis'form, I use, an additionalbafle,plateffla that is positioned betweenr thetwo cylindrical wa-v ter jackets32 and, like thetwo outer `baifie platesY 34, servestodirectthe-products of combustion through theinlet so as to insure aproper circu-4 lation from front to rear through the waterfjacketV and into the upper chambers,` as inthe otherl formof construction. v v Having thusdescribed my; invention, what I claimand desire to'secure'by-Letters Patentisg i' v 1.,.A :boilerof the class described comprisinga main outer water jacket .having avcombustion j chamber in its lower portion and a smokeutletl cylindrical member in spaced relation to the'inner wall of the enclosing water jacket, said re-` at the top, a cylindrical water jacket removably positioned in the two ends of the outer water jacket and extending the length of the boiler and having a central heat passage therein, inletheat passages through the sides of one end portion leading into the central passage, outlet heat passages through both sides of the other end portion leading from the central passage, a circulating pipe connecting the main outer water jacket with the end of the inner cylindrical water jacket, elongated balile plates between the sides of the cylindrical water jacket and the enclosing outer jacket, forming separate elongated passages be tween the outer and inner water jackets through which the heat and smoke pass to the outlet.

2. A boiler of the class described comprising a main outer water jacket having a combustion chamber in its lower portion and a smoke outlet at the top, a cylindrical water jacket removably positioned in the opposite end portions of said outer water jacket and having a central longitudinal heat passage therein and inlet heat passages through one end portion communicating with the Viirst mentioned passage, an outlet heat vpassage through the other end portion, a vcirculating pipe connecting the outer water jacket with the inner cylindrical water jacket, removable plates for closing the ends of the cylindrical water jacket, elongated baille plates between the sides of the cylindrical water jacket and the enclosing outer jacket, forming a separate elongated passage on each side between the outer and inner water jackets through which the heat and smoke pass to the smoke outlet.

3. A boiler of the class described comprising an enclosing water jacket having a combustion chamber in its lower portion andaligned openings in its opposite ends and a smoke outlet at the top, an elongated removable water jacket positioned in the boiler and resting in the said openings, said removable water jacket including a ue Aand inlet passages thereto through one side portion, and outlet passages therefrom through another side portion, removable plates for closing the ends of ue, elongated baille plates between the sides of the removablewater jacket and the enclosing water jacket, forming three separated elongated passages between the outer and inner water jackets through which the heat and'smoke pass to the outlet.

4. A boiler of the class described comprising an enclosing water jacket having a combustion chamber in its lower portion and aligned openings in its opposite ends, an inner cylindrical water container having a longitudinal nre flue ex-l tending therethrough positioned in the boiler with its end portions resting in the said openings, and with its outer plate member in spaced relation to the inner wall of the enclosing water jacket,

flue inlet and outlet in said longitudinal i-lre flue,

movable water jacket including a' central flue extending the length thereof, a flue inlet through the lower side'portion, an outletflue through the upperside portion of said removable jacket, removable plates for closing the ends of the open,-

ings, circulating pipes'positioned exterior of the boiler connecting the outer enclosing water jacket and the inner removable water jacket, elongatedv baille plates betweenthe sides of the cylindrical water jacket and the enclosing water jacket, forming separated elongatedv passages between the outer'and inner lwater jackets through which the heat and smoke pass to the outlet.-

6. A boiler of theclass described comprising an` enclosing water jacket having a combustion chamber in its vlower portion and a'lignedopenv ings in its opposite ends and a smoke outlet at the top, an elongated water jacket removably positioned in the boiler above the combustion cham ber with its ends supported in the aligned openc ings, and in spaced relation to the outer water jacket, said cylindricalwater jacket including a central longitudinal opening forming a heat passage therethrough and a heat inlet and'outlet through the sides oi the cylindricalwater jacket, heat passages formed between'the sides and top of the cylindrical water jacket and the outer wachamber in'its lower portion and aligned cylin-.`

drical openings in its opposite'ends and a smoke youtlet at the top, -a cylindrical water jacket having a central longitudinal opening therethrough positioned in the boilerand freely resting in the cylindrical openings, with its outer cylindrical member yin spaced relation to the inner wall of the enclosing water jacket, and a heat inlet and outlet through the sides of the cylindrical water jacket plates for closing the ends of the aligned openings in the boiler and cylindrical water jacket, elongated baille plates between the sides of the cylindrical water jacket and the enclosing water jacket; forming a'series. of separated elongated passages between the Aouter and inner water vjackets through which the'heat 'and smoke pass tothe outlet. Y -V v 8. A boiler ofthe class described comprisingl an enclosing water jacket having a combustion chamber in its lower portion and aligned cylindrical openings in its opposite ends and a smoke outlet at the top, a cylindrical water jacket extending through the main body of the boiler above the combustion chamber and into the cylindrical openings, said cylindrical waterjacket having a central longitudinal opening therethrough, inlet passages through the sides of one y end portion, and outlet passages through the sides-of the opposite end portion of saidv cylindrical water jacket, elongated baffle plates `between the sides of they cylindrical water jacketv and the main water jacket, forming elongated heat andsmoke passages between the outer and inner water jackets through which the heat and smoke pass to the outlet, and a steam dome on top of the boiler and communicating therewith.

` Y ELMER A. l-IOOPER. 

